Machine-brake.



C. C. RED & 0. G. BOSS.

MACHINE BRAKE.

APPLICATION FILED .IULY 30| |913.

Patented Jan. 2, 1917.l

ES FN FFQ.

CHRISTOPHER C. REID AND OSCAR G. ROSS, OF TURLOCK, CALIFORNIA.

MACHINE-BRAKE.

Application led July 30. 1913.

To all wkom t may conce/rn f Be it known that we, CHRISTOPHER C. RED and OSCAR G. Ross, citizensof the United States, residing at Turlock, in the county of Stanislaus and State of California, have invented certain new and useful Improvements in Machine-Brakes, of which the following is a specification.

Our invention relates to sewing machine attachments and more particularly to an improved machine brake of a construction designed for operative association with a standard sewing machine.

in describing our invention in detail reference will be had to the accompanying drawings, wherein like characters denote like or corresponding parts throughout the several views and in which Figure 1 is a front elevation of the attachment, the casing being shown in section and the machine to which it is attached in dotted lines; and F ig. 2 is a detail elevation of the brake mechanism.

Before proceeding to the description of the drawings, we desire to call particular attention to the fact that while we have evolved our invention with particular reference to its application in connection with sewing machines of the household type, the same may be readily utilized in connection with all sewing machines and various other 1 machines or appliances susceptible of its application.

Referring now more particularly to the accompanying drawings, wherein is illustrated the preferred form of our invention, the numeral 1 designates a1 sewing machine of the ordinary type having the usual foot pedal 2 and operating wheel 3 forming a part thereof, the machine itself being shown only in dotted lines as it has nothing whatsoever to do with our invention which resides entirely in the attachment therefor.

The motor is preferably arranged in a suitable casing l having a plurality of longitudinally extending supporting rods 5 projecting from one face thereof, each of the said rods having adjustably mounted thereon one or more suitable clamps, designated in their entirety by the numeral 6.

A coil spring l() of the desired tension is disposed within the casing 4, one end being attached or fastened to a suitable shaft 11 and the opposite end to a rod 12 extending parallel with the said shaft, the former having a crank handle 13 keyed or otherwise Specification of Letters Patent.

Patented Jan. 2,v 1511"?.

serial No. reame.

fixedly secured thereto for winding the spring 10 thereupon, such winding of the spring being necessary to the operation of the device. A. comparatively large gear wheel l-l is mounted for rotation upon the shaft 11, the said wheel meshing into a pinion 15'` mounted upon a shaft 16 journaled within the casing sides and parallel with the shaft l1. A second gear wheel 17 is mounted upon the said shaft 16 which in turn meshes into a pinion 1S mounted upon a second shaft 19 arranged above the shaft 16 previously referred to. A third gear wheel 20 is mounted upon the shaft 19, the said wheel I Q0 meshing into a pinion 21 mounted upon a fcuirth shaft QQ also extending parallel with the above mentioned shafts and likewise having mounted thereupon, another gear wheel which is adapted to mesh into a pinion Q4 in turn fixedly secured to the driven shaft 25 of the motor or attachment, the latter shaft being ournaled within the frame or casing sides and projecting upon the exterior of the said casing for the purpose of supporting the driven wheel 26 of the device, the latter being comparatively large as is clearly shown in F ig. 1 of the drawings. rlhe wheel 2G imparts motion to the driven wheel 3 of the machine through the medium of a belt or cord 27 arranged over the said two wheels, this arrangement of the various gears and shafts causing the said wheel 3 to be driven or run by the power generated from the unwinding of the spring 10, the several gears increasing the speed of rotation of the wheel 26 for the obvious purpose of increasing the speed of rotation of the said wheel 3 with respect to the shaft 11 to which the spring 10 is secured.

Passing on to the description of the brake mechanism, the same comprises a fly wheel 2S having a brake-shoe 29 disposed within the casing l so as to frictionally engage the periphery of the said wheel, the latter being mounted upon the driven shaft 25 for controlling the rotation thereof, the operation of the shoe being controlled by the foot of the ope 'ator through the medium of a connecting rod 30 secured as at 31 to the pedal of the machine and extending throughout the entire length of the casing e where it is pivotally secured as at 32 to a rod 33 fulcrumed intermediate its ends, said rod extending through the casing sides (thereby providing for the fulcrum) and having the brake shoe 29 arranged upon the opposite end thereof from that to which the rod 30 is connected. By depressing pedal 2 in one direction, it will ybe seen that the rod 33 may be rocked or actuated to cause the brake shoe 29 to move into frictional engagement with the periphery of the wheel 28. Pressure upon the pedal in the opposite direction will cause said shoe to be moved out of engagement with said wheel. A leaf spring 34: is secured as at 35 to the casing il, the said spring normally engaging the shoe to force same into frictional engagement with the said wheel 28.

It will be seen from the above, taken in connection with the accompanying drawings that an attachment or spring motor of the above mentioned type may be readily applied to any of the well known or standard household machines; that the said device or attachment may be shifted from one to the other side of the machine without in any way altering or eecting the operation thereof; and that the power derived from the unwinding of the spring l0 is suflicient to drive or run the machine for a. considerable length of time, this being accomplished by reason of the several gears and pinions employed for the purpose of increasing the rotation of the driven wheel 26 as above stated.

In reduction to practice, we have found that theform of our invention, illustrated in the drawings and referred to in the above description, as the preferred embodiment, is

the most efficient and practical; yet realiz ing that the conditions concurrent with the adoption of my device will necessarily vary,

we desire to emphasize the fact that various minor changes 1n details of construction, proportion and arrangement of parts may be resorted to, when required, without Y sacrificing any of the advantages of our invention, as deiined in the appended claim.

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent is:

In an attachment for sewing machines, the Y said shoe, and means to operatively connect i the pedal to said lever, said pedal when depressed from one side of its fulcrumedV point moving the brake shoe out of braking relation with its associated means and against tension of said spring, said pedal when depressed from the outer side of its fulcrumed point increasing the degree of braking engagement of the brake shoe with its Vassociated means, as and for the purpose set forth. Y

ln testimony whereof we aiiix our signatures in presence of two witnesses.

CHRISTOPHER C. RED. @SCAR G. ROSS.

Witnesses:

P. H. BrNroRD, A. S. CHILD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents2 Washington, ID. G. 

